<template>
  <div id="app">
    <div class="todo-container">
      <div class="todo-wrap">
        <div class="todo-header">
          <input
            type="text"
            placeholder="请输入你的任务名称，按回车键确认"
            v-model="newTaskDescription"
            @keyup.enter="addTask"
          />
        </div>
        <ul class="todo-main">
          <li v-for="(todo, index) in todos" :key="index">
            <label>
              <input
                type="checkbox"
                :checked="todo.completed"
                @change="toggleCompleted(index, $event.target.checked)"
              />
              <span>{{ todo.description }}</span>
            </label>
            <button class="btn btn-danger" style="display: none">删除</button>
          </li>
          <li>
            <label>
              <input type="checkbox" />
              <span>yyyy</span>
            </label>
            <button class="btn btn-danger" style="display: none">删除</button>
          </li>
        </ul>
        <div class="todo-footer">
          <label>
            <input type="checkbox" />
          </label>
          <span>
            <span>已完成{{ completedCount }}</span> / 全部{{
              todos.length
            }}</span
          >
          <button class="btn btn-danger" @click="clearTrue">
            清除已完成任务
          </button>
        </div>
      </div>
    </div>
  </div>
</template>

<script lang="ts">
export default {
  name: "App",
  data() {
    return {
      todos: [],
      newTaskDescription: "",
    };
  },
  computed: {
    completedCount() {
      return this.todos.filter((todo) => todo.completed).length;
    },
  },
  methods: {
    clearTrue() {
      // 清除已完成任务的逻辑

      this.todos = this.todos.filter((todo) => !todo.completed);
    },
    addTask() {
      if (this.newTaskDescription.trim()) {
        // 确保输入不为空白
        this.todos.push({
          description: this.newTaskDescription,
          completed: false,
        });
        this.newTaskDescription = ""; // 清空输入框
      }
    },
    toggleCompleted(index, isChecked) {
      this.$set(this.todos, index, {
        ...this.todos[index],
        completed: isChecked,
      });
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow:
    inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}

/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>
